/**
 ******************************************************************************
 *
 * @file       rectlatlng.h
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
 * @brief
 * @see        The GNU Public License (GPL) Version 3
 * @defgroup   OPMapWidget
 * @{
 *
 *****************************************************************************/
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#ifndef RECTLATLNG_H
#define RECTLATLNG_H

// #include "pointlatlng.h"
#include "../internals/pointlatlng.h"
#include "math.h"
#include <QString>
#include "sizelatlng.h"

namespace internals {
struct RectLatLng {
public:
    static RectLatLng Empty;
    friend uint qHash(RectLatLng const & rect);
    friend bool operator==(RectLatLng const & left, RectLatLng const & right);
    friend bool operator!=(RectLatLng const & left, RectLatLng const & right);
    RectLatLng(double const & lat, double const & lng, double const & widthLng, double const & heightLat)
    {
        this->lng = lng;
        this->lat = lat;
        this->widthLng = widthLng;
        this->heightLat = heightLat;
        isempty   = false;
    }
    RectLatLng(PointLatLng const & location, SizeLatLng const & size)
    {
        this->lng = location.Lng();
        this->lat = location.Lat();
        this->widthLng = size.WidthLng();
        this->heightLat = size.HeightLat();
        isempty   = false;
    }
    RectLatLng()
    {
        this->lng = 0;
        this->lat = 0;
        this->widthLng = 0;
        this->heightLat = 0;
        isempty   = true;
    }

    static RectLatLng FromLTRB(double const & lng, double const & lat, double const & rightLng, double const & bottomLat)
    {
        return RectLatLng(lat, lng, rightLng - lng, lat - bottomLat);
    }
    PointLatLng LocationTopLeft() const
    {
        return PointLatLng(this->lat, this->lng);
    }
    void SetLocationTopLeft(PointLatLng const & value)
    {
        this->lng = value.Lng();
        this->lat = value.Lat();
        isempty   = false;
    }
    PointLatLng LocationRightBottom()
    {
        PointLatLng ret = PointLatLng(this->lat, this->lng);

        ret.Offset(HeightLat(), WidthLng());
        return ret;
    }
    SizeLatLng Size()
    {
        return SizeLatLng(this->HeightLat(), this->WidthLng());
    }
    void SetSize(SizeLatLng const & value)
    {
        this->widthLng  = value.WidthLng();
        this->heightLat = value.HeightLat();
        isempty = false;
    }
    double Lng() const
    {
        return this->lng;
    }
    void SetLng(double const & value)
    {
        this->lng = value;
        isempty   = false;
    }


    double Lat() const
    {
        return this->lat;
    }
    void SetLat(double const & value)
    {
        this->lat = value;
        isempty   = false;
    }

    double WidthLng() const
    {
        return this->widthLng;
    }
    void SetWidthLng(double const & value)
    {
        this->widthLng = value;
        isempty = false;
    }
    double HeightLat() const
    {
        return this->heightLat;
    }
    void SetHeightLat(double const & value)
    {
        this->heightLat = value;
        isempty = false;
    }
    double Left() const
    {
        return this->Lng();
    }

    double Top() const
    {
        return this->Lat();
    }

    double Right() const
    {
        return this->Lng() + this->WidthLng();
    }

    double Bottom() const
    {
        return this->Lat() - this->HeightLat();
    }
    bool IsEmpty() const
    {
        return isempty;
    }
    bool Contains(double const & lat, double const & lng)
    {
        return (((this->Lng() <= lng) && (lng < (this->Lng() + this->WidthLng()))) && (this->Lat() >= lat)) && (lat > (this->Lat() - this->HeightLat()));
    }

    bool Contains(PointLatLng const & pt)
    {
        return this->Contains(pt.Lat(), pt.Lng());
    }

    bool Contains(RectLatLng const & rect)
    {
        return (((this->Lng() <= rect.Lng()) && ((rect.Lng() + rect.WidthLng()) <= (this->Lng() + this->WidthLng()))) && (this->Lat() >= rect.Lat())) && ((rect.Lat() - rect.HeightLat()) >= (this->Lat() - this->HeightLat()));
    }
    void Inflate(double const & lat, double const & lng)
    {
        this->lng -= lng;
        this->lat += lat;
        this->widthLng += (double)2 * lng;
        this->heightLat += (double)2 * lat;
    }

    void Inflate(SizeLatLng const & size)
    {
        this->Inflate(size.HeightLat(), size.WidthLng());
    }

    static RectLatLng Inflate(RectLatLng const & rect, double const & lat, double const & lng)
    {
        RectLatLng ef = rect;

        ef.Inflate(lat, lng);
        return ef;
    }

    void Intersect(RectLatLng const & rect)
    {
        RectLatLng ef = Intersect(rect, *this);

        this->lng = ef.Lng();
        this->lat = ef.Lat();
        this->widthLng = ef.WidthLng();
        this->heightLat = ef.HeightLat();
    }
    static RectLatLng Intersect(RectLatLng const & a, RectLatLng const & b)
    {
        double lng  = std::max(a.Lng(), b.Lng());
        double num2 = std::min((double)(a.Lng() + a.WidthLng()), (double)(b.Lng() + b.WidthLng()));

        double lat  = std::max(a.Lat(), b.Lat());
        double num4 = std::min((double)(a.Lat() + a.HeightLat()), (double)(b.Lat() + b.HeightLat()));

        if ((num2 >= lng) && (num4 >= lat)) {
            return RectLatLng(lng, lat, num2 - lng, num4 - lat);
        }
        return Empty;
    }
    bool IntersectsWith(RectLatLng const & rect)
    {
        return (((rect.Lng() < (this->Lng() + this->WidthLng())) && (this->Lng() < (rect.Lng() + rect.WidthLng()))) && (rect.Lat() < (this->Lat() + this->HeightLat()))) && (this->Lat() < (rect.Lat() + rect.HeightLat()));
    }

    static RectLatLng Union(RectLatLng const & a, RectLatLng const & b)
    {
        double lng  = std::min(a.Lng(), b.Lng());
        double num2 = std::max((double)(a.Lng() + a.WidthLng()), (double)(b.Lng() + b.WidthLng()));
        double lat  = std::min(a.Lat(), b.Lat());
        double num4 = std::max((double)(a.Lat() + a.HeightLat()), (double)(b.Lat() + b.HeightLat()));

        return RectLatLng(lng, lat, num2 - lng, num4 - lat);
    }
    void Offset(PointLatLng const & pos)
    {
        this->Offset(pos.Lat(), pos.Lng());
    }

    void Offset(double const & lat, double const & lng)
    {
        this->lng += lng;
        this->lat -= lat;
    }

    QString ToString() const
    {
        return "{Lat=" + QString::number(this->Lat()) + ",Lng=" + QString::number(this->Lng()) + ",WidthLng=" + QString::number(this->WidthLng()) + ",HeightLat=" + QString::number(this->HeightLat()) + "}";
    }

private:
    double lng;
    double lat;
    double widthLng;
    double heightLat;
    bool   isempty;
};
}
#endif // RECTLATLNG_H


// static RectLatLng()
// {
// Empty = new RectLatLng();
// }
// }
